
Description: Mtpaint is a simple, easy to use open source painting program for Linux. It has basic drawing and image editing features like layers, brushes, shape tools, color picker etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Piskel is a free online editor for sprites and pixel art. It allows users to easily create animated sprites and pixel art with a simple interface and tools like layers, palettes, onion skinning, and export animations as GIFs or spritesheets.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API